Keyfob wireless/868mhz ara24-w2 dahua

SOS emergency alarm.

Frequency hopping function and two-way communication technology

Cloud update and automatic recovery from update failure.

Button: 4 (Home, Away, Disarm, and SOS)

Low Battery Alarm

Carrier Frequency: 868.0 MHz–868.6 MHz

Communication Distance: Up to 900 m in an open space, Two-way

Encryption Mode: AES128

Power Supply: CR2032 battery

Operating Temperature: –10 °C to +55 °C

Battery Life: 5 years

Product Dimensions: 60.0 mm × 39.5 mm × 15.0 mm